/
auth.go
86 lines (72 loc) · 1.94 KB
/
auth.go
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package k8s
import (
"context"
"encoding/base64"
"fmt"
"golang.org/x/oauth2"
auth "golang.org/x/oauth2/google"
"google.golang.org/api/container/v1"
_ "k8s.io/client-go/plugin/pkg/client/auth/azure"
_ "k8s.io/client-go/plugin/pkg/client/auth/exec"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/client-go/tools/clientcmd/api"
"github.com/forest33/warthog/business/entity"
)
var gcsScopes = []string{"https://www.googleapis.com/auth/cloud-platform"}
func (c *Client) gcsAuth(ctx context.Context, r *entity.GCSAuth) (*rest.Config, error) {
var token *oauth2.Token
credentials, err := auth.FindDefaultCredentials(ctx, gcsScopes...)
if err != nil {
return nil, err
}
token, err = credentials.TokenSource.Token()
if err != nil {
return nil, err
}
containerService, err := container.NewService(ctx)
if err != nil {
return nil, err
}
name := fmt.Sprintf("projects/%s/locations/%s/clusters/%s", r.Project, r.Location, r.Cluster)
resp, err := containerService.Projects.Locations.Clusters.Get(name).Do()
if err != nil {
return nil, err
}
cert, err := base64.StdEncoding.DecodeString(resp.MasterAuth.ClusterCaCertificate)
if err != nil {
return nil, err
}
apiConfig := &api.Config{
APIVersion: "v1",
Kind: "Config",
Clusters: map[string]*api.Cluster{
r.Cluster: {
CertificateAuthorityData: cert,
Server: fmt.Sprintf("https://%s", resp.Endpoint),
},
},
Contexts: map[string]*api.Context{
r.Cluster: {
Cluster: r.Cluster,
AuthInfo: r.Cluster,
},
},
CurrentContext: r.Cluster,
}
restConfig, err := clientcmd.NewNonInteractiveClientConfig(
*apiConfig,
r.Cluster,
&clientcmd.ConfigOverrides{
CurrentContext: r.Cluster,
},
nil,
).ClientConfig()
if err != nil {
return nil, err
}
restConfig.BearerToken = token.AccessToken
return restConfig, nil
}